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an airplane with a wingspan of 100m flies parallel to the earth's surface at a point where the downward component of the earth's magnetic field is 0.500 x 10^-4 T. This airplane is equipped with a voltmeter that can measure the electric potential difference between one edge of the wing and the other edge. If the airplane is flying with speed of 200 m/s, what is the reading of the voltmeter?
When light of wavelength 350 nm falls on a potassium surface, electrons having a maximum kinetic energy of 1.31 eV are emitted. find the frequency corresponding to the cutoff wavelength
The electric output of a power plant is 730MW . Cooling water flows through the power plant at the rate 1.30 ×108L/hr. What is the power plant's thermal efficiency
An object, mass 1.48 kg, moves in a horizontal circle with a radius of 1.52m. The object has an intial velocity of 28.0 m s-1. If the kinetic coefficient of friction between object and surface is 0.382.
A parallel plate capacitor has plates 2.00 cm by 3.00 the plates are saparated by a 1.00 m thickness of teflon. find the capacitance of this device
A motorcycle has a constant speed of 25.0 m/s as it passes over the top of a hill whose radius of curvature is 118 m, Find the centripetal force that acts on the cycle
An electron has an initial velocity of (15.0 j + 22.0 k) km/s and the constant acceleration of (3.00*10^12 m/s^22)i in a region in which uniform electric and magnetic fields are present. If B = (400 µT)i, find the electric field E.
An x-ray tube is operated at 45000 V. Find the minimum wavelength of the radiation emitted by this tube
How much would it cost just to keep the hot water inside the heater for one week? d)Suppose that you wrap the hot water heater on all sides with a 10 cm thick blanket of fiberglass insulation which has a thermal conductivity of 0.04 W/(m K).
How various lines per centimeter does a grating have if the third-order occurs at a 23.0 degree angle for 630-nm light.
Two motorcycles are traveling in opposite directions at the same speed when one of the cyclists blasts his horn, what is the speed of the motorcycles
A freight company uses a compressed spring to shoot 1.7 kg packages up a 1m high frictionless ramp into a truck. The spring constant is 241 N/m and the spring is compressed 33 cm.
An electron moves into a uniform magnetic field B = 0.182mT with initial speed with v = 12000m/s, What is the radius of the helical motion
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